ace.define(
  'ace/snippets',
  [
    'require',
    'exports',
    'module',
    'ace/lib/dom',
    'ace/lib/oop',
    'ace/lib/event_emitter',
    'ace/lib/lang',
    'ace/range',
    'ace/range_list',
    'ace/keyboard/hash_handler',
    'ace/tokenizer',
    'ace/clipboard',
    'ace/editor',
  ],
  function (require, exports, module) {
    'use strict';
    var dom = require('./lib/dom');
    var oop = require('./lib/oop');
    var EventEmitter = require('./lib/event_emitter').EventEmitter;
    var lang = require('./lib/lang');
    var Range = require('./range').Range;
    var RangeList = require('./range_list').RangeList;
    var HashHandler = require('./keyboard/hash_handler').HashHandler;
    var Tokenizer = require('./tokenizer').Tokenizer;
    var clipboard = require('./clipboard');
    var VARIABLES = {
      CURRENT_WORD: function (editor) {
        return editor.session.getTextRange(editor.session.getWordRange());
      },
      SELECTION: function (editor, name, indentation) {
        var text = editor.session.getTextRange();
        if (indentation) return text.replace(/\n\r?([ \t]*\S)/g, '\n' + indentation + '$1');
        return text;
      },
      CURRENT_LINE: function (editor) {
        return editor.session.getLine(editor.getCursorPosition().row);
      },
      PREV_LINE: function (editor) {
        return editor.session.getLine(editor.getCursorPosition().row - 1);
      },
      LINE_INDEX: function (editor) {
        return editor.getCursorPosition().row;
      },
      LINE_NUMBER: function (editor) {
        return editor.getCursorPosition().row + 1;
      },
      SOFT_TABS: function (editor) {
        return editor.session.getUseSoftTabs() ? 'YES' : 'NO';
      },
      TAB_SIZE: function (editor) {
        return editor.session.getTabSize();
      },
      CLIPBOARD: function (editor) {
        return clipboard.getText && clipboard.getText();
      },
      FILENAME: function (editor) {
        return /[^/\\]*$/.exec(this.FILEPATH(editor))[0];
      },
      FILENAME_BASE: function (editor) {
        return /[^/\\]*$/.exec(this.FILEPATH(editor))[0].replace(/\.[^.]*$/, '');
      },
      DIRECTORY: function (editor) {
        return this.FILEPATH(editor).replace(/[^/\\]*$/, '');
      },
      FILEPATH: function (editor) {
        return '/not implemented.txt';
      },
      WORKSPACE_NAME: function () {
        return 'Unknown';
      },
      FULLNAME: function () {
        return 'Unknown';
      },
      BLOCK_COMMENT_START: function (editor) {
        var mode = editor.session.$mode || {};
        return (mode.blockComment && mode.blockComment.start) || '';
      },
      BLOCK_COMMENT_END: function (editor) {
        var mode = editor.session.$mode || {};
        return (mode.blockComment && mode.blockComment.end) || '';
      },
      LINE_COMMENT: function (editor) {
        var mode = editor.session.$mode || {};
        return mode.lineCommentStart || '';
      },
      CURRENT_YEAR: date.bind(null, { year: 'numeric' }),
      CURRENT_YEAR_SHORT: date.bind(null, { year: '2-digit' }),
      CURRENT_MONTH: date.bind(null, { month: 'numeric' }),
      CURRENT_MONTH_NAME: date.bind(null, { month: 'long' }),
      CURRENT_MONTH_NAME_SHORT: date.bind(null, { month: 'short' }),
      CURRENT_DATE: date.bind(null, { day: '2-digit' }),
      CURRENT_DAY_NAME: date.bind(null, { weekday: 'long' }),
      CURRENT_DAY_NAME_SHORT: date.bind(null, { weekday: 'short' }),
      CURRENT_HOUR: date.bind(null, { hour: '2-digit', hour12: false }),
      CURRENT_MINUTE: date.bind(null, { minute: '2-digit' }),
      CURRENT_SECOND: date.bind(null, { second: '2-digit' }),
    };
    VARIABLES.SELECTED_TEXT = VARIABLES.SELECTION;
    function date(dateFormat) {
      var str = new Date().toLocaleString('en-us', dateFormat);
      return str.length == 1 ? '0' + str : str;
    }
    var SnippetManager = function () {
      this.snippetMap = {};
      this.snippetNameMap = {};
    };
    (function () {
      oop.implement(this, EventEmitter);
      this.getTokenizer = function () {
        return SnippetManager.$tokenizer || this.createTokenizer();
      };
      this.createTokenizer = function () {
        function TabstopToken(str) {
          str = str.substr(1);
          if (/^\d+$/.test(str)) return [{ tabstopId: parseInt(str, 10) }];
          return [{ text: str }];
        }
        function escape(ch) {
          return '(?:[^\\\\' + ch + ']|\\\\.)';
        }
        var formatMatcher = {
          regex: '/(' + escape('/') + '+)/',
          onMatch: function (val, state, stack) {
            var ts = stack[0];
            ts.fmtString = true;
            ts.guard = val.slice(1, -1);
            ts.flag = '';
            return '';
          },
          next: 'formatString',
        };
        SnippetManager.$tokenizer = new Tokenizer({
          start: [
            {
              regex: /\\./,
              onMatch: function (val, state, stack) {
                var ch = val[1];
                if (ch == '}' && stack.length) {
                  val = ch;
                } else if ('`$\\'.indexOf(ch) != -1) {
                  val = ch;
                }
                return [val];
              },
            },
            {
              regex: /}/,
              onMatch: function (val, state, stack) {
                return [stack.length ? stack.shift() : val];
              },
            },
            { regex: /\$(?:\d+|\w+)/, onMatch: TabstopToken },
            {
              regex: /\$\{[\dA-Z_a-z]+/,
              onMatch: function (str, state, stack) {
                var t = TabstopToken(str.substr(1));
                stack.unshift(t[0]);
                return t;
              },
              next: 'snippetVar',
            },
            { regex: /\n/, token: 'newline', merge: false },
          ],
          snippetVar: [
            {
              regex: '\\|' + escape('\\|') + '*\\|',
              onMatch: function (val, state, stack) {
                var choices = val
                  .slice(1, -1)
                  .replace(/\\[,|\\]|,/g, function (operator) {
                    return operator.length == 2 ? operator[1] : '\x00';
                  })
                  .split('\x00')
                  .map(function (value) {
                    return { value: value };
                  });
                stack[0].choices = choices;
                return [choices[0]];
              },
              next: 'start',
            },
            formatMatcher,
            { regex: '([^:}\\\\]|\\\\.)*:?', token: '', next: 'start' },
          ],
          formatString: [
            {
              regex: /:/,
              onMatch: function (val, state, stack) {
                if (stack.length && stack[0].expectElse) {
                  stack[0].expectElse = false;
                  stack[0].ifEnd = { elseEnd: stack[0] };
                  return [stack[0].ifEnd];
                }
                return ':';
              },
            },
            {
              regex: /\\./,
              onMatch: function (val, state, stack) {
                var ch = val[1];
                if (ch == '}' && stack.length) val = ch;
                else if ('`$\\'.indexOf(ch) != -1) val = ch;
                else if (ch == 'n') val = '\n';
                else if (ch == 't') val = '\t';
                else if ('ulULE'.indexOf(ch) != -1) val = { changeCase: ch, local: ch > 'a' };
                return [val];
              },
            },
            {
              regex: '/\\w*}',
              onMatch: function (val, state, stack) {
                var next = stack.shift();
                if (next) next.flag = val.slice(1, -1);
                this.next = next && next.tabstopId ? 'start' : '';
                return [next || val];
              },
              next: 'start',
            },
            {
              regex: /\$(?:\d+|\w+)/,
              onMatch: function (val, state, stack) {
                return [{ text: val.slice(1) }];
              },
            },
            {
              regex: /\${\w+/,
              onMatch: function (val, state, stack) {
                var token = { text: val.slice(2) };
                stack.unshift(token);
                return [token];
              },
              next: 'formatStringVar',
            },
            { regex: /\n/, token: 'newline', merge: false },
            {
              regex: /}/,
              onMatch: function (val, state, stack) {
                var next = stack.shift();
                this.next = next && next.tabstopId ? 'start' : '';
                return [next || val];
              },
              next: 'start',
            },
          ],
          formatStringVar: [
            {
              regex: /:\/\w+}/,
              onMatch: function (val, state, stack) {
                var ts = stack[0];
                ts.formatFunction = val.slice(2, -1);
                return [stack.shift()];
              },
              next: 'formatString',
            },
            formatMatcher,
            {
              regex: /:[\?\-+]?/,
              onMatch: function (val, state, stack) {
                if (val[1] == '+') stack[0].ifEnd = stack[0];
                if (val[1] == '?') stack[0].expectElse = true;
              },
              next: 'formatString',
            },
            { regex: '([^:}\\\\]|\\\\.)*:?', token: '', next: 'formatString' },
          ],
        });
        return SnippetManager.$tokenizer;
      };
      this.tokenizeTmSnippet = function (str, startState) {
        return this.getTokenizer()
          .getLineTokens(str, startState)
          .tokens.map(function (x) {
            return x.value || x;
          });
      };
      this.getVariableValue = function (editor, name, indentation) {
        if (/^\d+$/.test(name)) return (this.variables.__ || {})[name] || '';
        if (/^[A-Z]\d+$/.test(name)) return (this.variables[name[0] + '__'] || {})[name.substr(1)] || '';
        name = name.replace(/^TM_/, '');
        if (!this.variables.hasOwnProperty(name)) return '';
        var value = this.variables[name];
        if (typeof value == 'function') value = this.variables[name](editor, name, indentation);
        return value == null ? '' : value;
      };
      this.variables = VARIABLES;
      this.tmStrFormat = function (str, ch, editor) {
        if (!ch.fmt) return str;
        var flag = ch.flag || '';
        var re = ch.guard;
        re = new RegExp(re, flag.replace(/[^gim]/g, ''));
        var fmtTokens = typeof ch.fmt == 'string' ? this.tokenizeTmSnippet(ch.fmt, 'formatString') : ch.fmt;
        var _self = this;
        var formatted = str.replace(re, function () {
          var oldArgs = _self.variables.__;
          _self.variables.__ = [].slice.call(arguments);
          var fmtParts = _self.resolveVariables(fmtTokens, editor);
          var gChangeCase = 'E';
          for (var i = 0; i < fmtParts.length; i++) {
            var ch = fmtParts[i];
            if (typeof ch == 'object') {
              fmtParts[i] = '';
              if (ch.changeCase && ch.local) {
                var next = fmtParts[i + 1];
                if (next && typeof next == 'string') {
                  if (ch.changeCase == 'u') fmtParts[i] = next[0].toUpperCase();
                  else fmtParts[i] = next[0].toLowerCase();
                  fmtParts[i + 1] = next.substr(1);
                }
              } else if (ch.changeCase) {
                gChangeCase = ch.changeCase;
              }
            } else if (gChangeCase == 'U') {
              fmtParts[i] = ch.toUpperCase();
            } else if (gChangeCase == 'L') {
              fmtParts[i] = ch.toLowerCase();
            }
          }
          _self.variables.__ = oldArgs;
          return fmtParts.join('');
        });
        return formatted;
      };
      this.tmFormatFunction = function (str, ch, editor) {
        if (ch.formatFunction == 'upcase') return str.toUpperCase();
        if (ch.formatFunction == 'downcase') return str.toLowerCase();
        return str;
      };
      this.resolveVariables = function (snippet, editor) {
        var result = [];
        var indentation = '';
        var afterNewLine = true;
        for (var i = 0; i < snippet.length; i++) {
          var ch = snippet[i];
          if (typeof ch == 'string') {
            result.push(ch);
            if (ch == '\n') {
              afterNewLine = true;
              indentation = '';
            } else if (afterNewLine) {
              indentation = /^\t*/.exec(ch)[0];
              afterNewLine = /\S/.test(ch);
            }
            continue;
          }
          if (!ch) continue;
          afterNewLine = false;
          if (ch.fmtString) {
            var j = snippet.indexOf(ch, i + 1);
            if (j == -1) j = snippet.length;
            ch.fmt = snippet.slice(i + 1, j);
            i = j;
          }
          if (ch.text) {
            var value = this.getVariableValue(editor, ch.text, indentation) + '';
            if (ch.fmtString) value = this.tmStrFormat(value, ch, editor);
            if (ch.formatFunction) value = this.tmFormatFunction(value, ch, editor);
            if (value && !ch.ifEnd) {
              result.push(value);
              gotoNext(ch);
            } else if (!value && ch.ifEnd) {
              gotoNext(ch.ifEnd);
            }
          } else if (ch.elseEnd) {
            gotoNext(ch.elseEnd);
          } else if (ch.tabstopId != null) {
            result.push(ch);
          } else if (ch.changeCase != null) {
            result.push(ch);
          }
        }
        function gotoNext(ch) {
          var i1 = snippet.indexOf(ch, i + 1);
          if (i1 != -1) i = i1;
        }
        return result;
      };
      this.insertSnippetForSelection = function (editor, snippetText) {
        var cursor = editor.getCursorPosition();
        var line = editor.session.getLine(cursor.row);
        var tabString = editor.session.getTabString();
        var indentString = line.match(/^\s*/)[0];
        if (cursor.column < indentString.length) indentString = indentString.slice(0, cursor.column);
        snippetText = snippetText.replace(/\r/g, '');
        var tokens = this.tokenizeTmSnippet(snippetText);
        tokens = this.resolveVariables(tokens, editor);
        tokens = tokens.map(function (x) {
          if (x == '\n') return x + indentString;
          if (typeof x == 'string') return x.replace(/\t/g, tabString);
          return x;
        });
        var tabstops = [];
        tokens.forEach(function (p, i) {
          if (typeof p != 'object') return;
          var id = p.tabstopId;
          var ts = tabstops[id];
          if (!ts) {
            ts = tabstops[id] = [];
            ts.index = id;
            ts.value = '';
            ts.parents = {};
          }
          if (ts.indexOf(p) !== -1) return;
          if (p.choices && !ts.choices) ts.choices = p.choices;
          ts.push(p);
          var i1 = tokens.indexOf(p, i + 1);
          if (i1 === -1) return;
          var value = tokens.slice(i + 1, i1);
          var isNested = value.some(function (t) {
            return typeof t === 'object';
          });
          if (isNested && !ts.value) {
            ts.value = value;
          } else if (value.length && (!ts.value || typeof ts.value !== 'string')) {
            ts.value = value.join('');
          }
        });
        tabstops.forEach(function (ts) {
          ts.length = 0;
        });
        var expanding = {};
        function copyValue(val) {
          var copy = [];
          for (var i = 0; i < val.length; i++) {
            var p = val[i];
            if (typeof p == 'object') {
              if (expanding[p.tabstopId]) continue;
              var j = val.lastIndexOf(p, i - 1);
              p = copy[j] || { tabstopId: p.tabstopId };
            }
            copy[i] = p;
          }
          return copy;
        }
        for (var i = 0; i < tokens.length; i++) {
          var p = tokens[i];
          if (typeof p != 'object') continue;
          var id = p.tabstopId;
          var ts = tabstops[id];
          var i1 = tokens.indexOf(p, i + 1);
          if (expanding[id]) {
            if (expanding[id] === p) {
              delete expanding[id];
              Object.keys(expanding).forEach(function (parentId) {
                ts.parents[parentId] = true;
              });
            }
            continue;
          }
          expanding[id] = p;
          var value = ts.value;
          if (typeof value !== 'string') value = copyValue(value);
          else if (p.fmt) value = this.tmStrFormat(value, p, editor);
          tokens.splice.apply(tokens, [i + 1, Math.max(0, i1 - i)].concat(value, p));
          if (ts.indexOf(p) === -1) ts.push(p);
        }
        var row = 0,
          column = 0;
        var text = '';
        tokens.forEach(function (t) {
          if (typeof t === 'string') {
            var lines = t.split('\n');
            if (lines.length > 1) {
              column = lines[lines.length - 1].length;
              row += lines.length - 1;
            } else column += t.length;
            text += t;
          } else if (t) {
            if (!t.start) t.start = { row: row, column: column };
            else t.end = { row: row, column: column };
          }
        });
        var range = editor.getSelectionRange();
        var end = editor.session.replace(range, text);
        var tabstopManager = new TabstopManager(editor);
        var selectionId = editor.inVirtualSelectionMode && editor.selection.index;
        tabstopManager.addTabstops(tabstops, range.start, end, selectionId);
      };
      this.insertSnippet = function (editor, snippetText) {
        var self = this;
        if (editor.inVirtualSelectionMode) return self.insertSnippetForSelection(editor, snippetText);
        editor.forEachSelection(
          function () {
            self.insertSnippetForSelection(editor, snippetText);
          },
          null,
          { keepOrder: true },
        );
        if (editor.tabstopManager) editor.tabstopManager.tabNext();
      };
      this.$getScope = function (editor) {
        var scope = editor.session.$mode.$id || '';
        scope = scope.split('/').pop();
        if (scope === 'html' || scope === 'php') {
          if (scope === 'php' && !editor.session.$mode.inlinePhp) scope = 'html';
          var c = editor.getCursorPosition();
          var state = editor.session.getState(c.row);
          if (typeof state === 'object') {
            state = state[0];
          }
          if (state.substring) {
            if (state.substring(0, 3) == 'js-') scope = 'javascript';
            else if (state.substring(0, 4) == 'css-') scope = 'css';
            else if (state.substring(0, 4) == 'php-') scope = 'php';
          }
        }
        return scope;
      };
      this.getActiveScopes = function (editor) {
        var scope = this.$getScope(editor);
        var scopes = [scope];
        var snippetMap = this.snippetMap;
        if (snippetMap[scope] && snippetMap[scope].includeScopes) {
          scopes.push.apply(scopes, snippetMap[scope].includeScopes);
        }
        scopes.push('_');
        return scopes;
      };
      this.expandWithTab = function (editor, options) {
        var self = this;
        var result = editor.forEachSelection(
          function () {
            return self.expandSnippetForSelection(editor, options);
          },
          null,
          { keepOrder: true },
        );
        if (result && editor.tabstopManager) editor.tabstopManager.tabNext();
        return result;
      };
      this.expandSnippetForSelection = function (editor, options) {
        var cursor = editor.getCursorPosition();
        var line = editor.session.getLine(cursor.row);
        var before = line.substring(0, cursor.column);
        var after = line.substr(cursor.column);
        var snippetMap = this.snippetMap;
        var snippet;
        this.getActiveScopes(editor).some(function (scope) {
          var snippets = snippetMap[scope];
          if (snippets) snippet = this.findMatchingSnippet(snippets, before, after);
          return !!snippet;
        }, this);
        if (!snippet) return false;
        if (options && options.dryRun) return true;
        editor.session.doc.removeInLine(
          cursor.row,
          cursor.column - snippet.replaceBefore.length,
          cursor.column + snippet.replaceAfter.length,
        );
        this.variables.M__ = snippet.matchBefore;
        this.variables.T__ = snippet.matchAfter;
        this.insertSnippetForSelection(editor, snippet.content);
        this.variables.M__ = this.variables.T__ = null;
        return true;
      };
      this.findMatchingSnippet = function (snippetList, before, after) {
        for (var i = snippetList.length; i--; ) {
          var s = snippetList[i];
          if (s.startRe && !s.startRe.test(before)) continue;
          if (s.endRe && !s.endRe.test(after)) continue;
          if (!s.startRe && !s.endRe) continue;
          s.matchBefore = s.startRe ? s.startRe.exec(before) : [''];
          s.matchAfter = s.endRe ? s.endRe.exec(after) : [''];
          s.replaceBefore = s.triggerRe ? s.triggerRe.exec(before)[0] : '';
          s.replaceAfter = s.endTriggerRe ? s.endTriggerRe.exec(after)[0] : '';
          return s;
        }
      };
      this.snippetMap = {};
      this.snippetNameMap = {};
      this.register = function (snippets, scope) {
        var snippetMap = this.snippetMap;
        var snippetNameMap = this.snippetNameMap;
        var self = this;
        if (!snippets) snippets = [];
        function wrapRegexp(src) {
          if (src && !/^\^?\(.*\)\$?$|^\\b$/.test(src)) src = '(?:' + src + ')';
          return src || '';
        }
        function guardedRegexp(re, guard, opening) {
          re = wrapRegexp(re);
          guard = wrapRegexp(guard);
          if (opening) {
            re = guard + re;
            if (re && re[re.length - 1] != '$') re = re + '$';
          } else {
            re = re + guard;
            if (re && re[0] != '^') re = '^' + re;
          }
          return new RegExp(re);
        }
        function addSnippet(s) {
          if (!s.scope) s.scope = scope || '_';
          scope = s.scope;
          if (!snippetMap[scope]) {
            snippetMap[scope] = [];
            snippetNameMap[scope] = {};
          }
          var map = snippetNameMap[scope];
          if (s.name) {
            var old = map[s.name];
            if (old) self.unregister(old);
            map[s.name] = s;
          }
          snippetMap[scope].push(s);
          if (s.prefix) s.tabTrigger = s.prefix;
          if (!s.content && s.body) s.content = Array.isArray(s.body) ? s.body.join('\n') : s.body;
          if (s.tabTrigger && !s.trigger) {
            if (!s.guard && /^\w/.test(s.tabTrigger)) s.guard = '\\b';
            s.trigger = lang.escapeRegExp(s.tabTrigger);
          }
          if (!s.trigger && !s.guard && !s.endTrigger && !s.endGuard) return;
          s.startRe = guardedRegexp(s.trigger, s.guard, true);
          s.triggerRe = new RegExp(s.trigger);
          s.endRe = guardedRegexp(s.endTrigger, s.endGuard, true);
          s.endTriggerRe = new RegExp(s.endTrigger);
        }
        if (Array.isArray(snippets)) {
          snippets.forEach(addSnippet);
        } else {
          Object.keys(snippets).forEach(function (key) {
            addSnippet(snippets[key]);
          });
        }
        this._signal('registerSnippets', { scope: scope });
      };
      this.unregister = function (snippets, scope) {
        var snippetMap = this.snippetMap;
        var snippetNameMap = this.snippetNameMap;
        function removeSnippet(s) {
          var nameMap = snippetNameMap[s.scope || scope];
          if (nameMap && nameMap[s.name]) {
            delete nameMap[s.name];
            var map = snippetMap[s.scope || scope];
            var i = map && map.indexOf(s);
            if (i >= 0) map.splice(i, 1);
          }
        }
        if (snippets.content) removeSnippet(snippets);
        else if (Array.isArray(snippets)) snippets.forEach(removeSnippet);
      };
      this.parseSnippetFile = function (str) {
        str = str.replace(/\r/g, '');
        var list = [],
          snippet = {};
        var re = /^#.*|^({[\s\S]*})\s*$|^(\S+) (.*)$|^((?:\n*\t.*)+)/gm;
        var m;
        while ((m = re.exec(str))) {
          if (m[1]) {
            try {
              snippet = JSON.parse(m[1]);
              list.push(snippet);
            } catch (e) {}
          }
          if (m[4]) {
            snippet.content = m[4].replace(/^\t/gm, '');
            list.push(snippet);
            snippet = {};
          } else {
            var key = m[2],
              val = m[3];
            if (key == 'regex') {
              var guardRe = /\/((?:[^\/\\]|\\.)*)|$/g;
              snippet.guard = guardRe.exec(val)[1];
              snippet.trigger = guardRe.exec(val)[1];
              snippet.endTrigger = guardRe.exec(val)[1];
              snippet.endGuard = guardRe.exec(val)[1];
            } else if (key == 'snippet') {
              snippet.tabTrigger = val.match(/^\S*/)[0];
              if (!snippet.name) snippet.name = val;
            } else if (key) {
              snippet[key] = val;
            }
          }
        }
        return list;
      };
      this.getSnippetByName = function (name, editor) {
        var snippetMap = this.snippetNameMap;
        var snippet;
        this.getActiveScopes(editor).some(function (scope) {
          var snippets = snippetMap[scope];
          if (snippets) snippet = snippets[name];
          return !!snippet;
        }, this);
        return snippet;
      };
    }.call(SnippetManager.prototype));
    var TabstopManager = function (editor) {
      if (editor.tabstopManager) return editor.tabstopManager;
      editor.tabstopManager = this;
      this.$onChange = this.onChange.bind(this);
      this.$onChangeSelection = lang.delayedCall(this.onChangeSelection.bind(this)).schedule;
      this.$onChangeSession = this.onChangeSession.bind(this);
      this.$onAfterExec = this.onAfterExec.bind(this);
      this.attach(editor);
    };
    (function () {
      this.attach = function (editor) {
        this.index = 0;
        this.ranges = [];
        this.tabstops = [];
        this.$openTabstops = null;
        this.selectedTabstop = null;
        this.editor = editor;
        this.editor.on('change', this.$onChange);
        this.editor.on('changeSelection', this.$onChangeSelection);
        this.editor.on('changeSession', this.$onChangeSession);
        this.editor.commands.on('afterExec', this.$onAfterExec);
        this.editor.keyBinding.addKeyboardHandler(this.keyboardHandler);
      };
      this.detach = function () {
        this.tabstops.forEach(this.removeTabstopMarkers, this);
        this.ranges = null;
        this.tabstops = null;
        this.selectedTabstop = null;
        this.editor.removeListener('change', this.$onChange);
        this.editor.removeListener('changeSelection', this.$onChangeSelection);
        this.editor.removeListener('changeSession', this.$onChangeSession);
        this.editor.commands.removeListener('afterExec', this.$onAfterExec);
        this.editor.keyBinding.removeKeyboardHandler(this.keyboardHandler);
        this.editor.tabstopManager = null;
        this.editor = null;
      };
      this.onChange = function (delta) {
        var isRemove = delta.action[0] == 'r';
        var selectedTabstop = this.selectedTabstop || {};
        var parents = selectedTabstop.parents || {};
        var tabstops = (this.tabstops || []).slice();
        for (var i = 0; i < tabstops.length; i++) {
          var ts = tabstops[i];
          var active = ts == selectedTabstop || parents[ts.index];
          ts.rangeList.$bias = active ? 0 : 1;
          if (delta.action == 'remove' && ts !== selectedTabstop) {
            var parentActive = ts.parents && ts.parents[selectedTabstop.index];
            var startIndex = ts.rangeList.pointIndex(delta.start, parentActive);
            startIndex = startIndex < 0 ? -startIndex - 1 : startIndex + 1;
            var endIndex = ts.rangeList.pointIndex(delta.end, parentActive);
            endIndex = endIndex < 0 ? -endIndex - 1 : endIndex - 1;
            var toRemove = ts.rangeList.ranges.slice(startIndex, endIndex);
            for (var j = 0; j < toRemove.length; j++) this.removeRange(toRemove[j]);
          }
          ts.rangeList.$onChange(delta);
        }
        var session = this.editor.session;
        if (!this.$inChange && isRemove && session.getLength() == 1 && !session.getValue()) this.detach();
      };
      this.updateLinkedFields = function () {
        var ts = this.selectedTabstop;
        if (!ts || !ts.hasLinkedRanges || !ts.firstNonLinked) return;
        this.$inChange = true;
        var session = this.editor.session;
        var text = session.getTextRange(ts.firstNonLinked);
        for (var i = 0; i < ts.length; i++) {
          var range = ts[i];
          if (!range.linked) continue;
          var original = range.original;
          var fmt = exports.snippetManager.tmStrFormat(text, original, this.editor);
          session.replace(range, fmt);
        }
        this.$inChange = false;
      };
      this.onAfterExec = function (e) {
        if (e.command && !e.command.readOnly) this.updateLinkedFields();
      };
      this.onChangeSelection = function () {
        if (!this.editor) return;
        var lead = this.editor.selection.lead;
        var anchor = this.editor.selection.anchor;
        var isEmpty = this.editor.selection.isEmpty();
        for (var i = 0; i < this.ranges.length; i++) {
          if (this.ranges[i].linked) continue;
          var containsLead = this.ranges[i].contains(lead.row, lead.column);
          var containsAnchor = isEmpty || this.ranges[i].contains(anchor.row, anchor.column);
          if (containsLead && containsAnchor) return;
        }
        this.detach();
      };
      this.onChangeSession = function () {
        this.detach();
      };
      this.tabNext = function (dir) {
        var max = this.tabstops.length;
        var index = this.index + (dir || 1);
        index = Math.min(Math.max(index, 1), max);
        if (index == max) index = 0;
        this.selectTabstop(index);
        if (index === 0) this.detach();
      };
      this.selectTabstop = function (index) {
        this.$openTabstops = null;
        var ts = this.tabstops[this.index];
        if (ts) this.addTabstopMarkers(ts);
        this.index = index;
        ts = this.tabstops[this.index];
        if (!ts || !ts.length) return;
        this.selectedTabstop = ts;
        var range = ts.firstNonLinked || ts;
        if (ts.choices) range.cursor = range.start;
        if (!this.editor.inVirtualSelectionMode) {
          var sel = this.editor.multiSelect;
          sel.toSingleRange(range);
          for (var i = 0; i < ts.length; i++) {
            if (ts.hasLinkedRanges && ts[i].linked) continue;
            sel.addRange(ts[i].clone(), true);
          }
        } else {
          this.editor.selection.fromOrientedRange(range);
        }
        this.editor.keyBinding.addKeyboardHandler(this.keyboardHandler);
        if (this.selectedTabstop && this.selectedTabstop.choices)
          this.editor.execCommand('startAutocomplete', { matches: this.selectedTabstop.choices });
      };
      this.addTabstops = function (tabstops, start, end) {
        var useLink = this.useLink || !this.editor.getOption('enableMultiselect');
        if (!this.$openTabstops) this.$openTabstops = [];
        if (!tabstops[0]) {
          var p = Range.fromPoints(end, end);
          moveRelative(p.start, start);
          moveRelative(p.end, start);
          tabstops[0] = [p];
          tabstops[0].index = 0;
        }
        var i = this.index;
        var arg = [i + 1, 0];
        var ranges = this.ranges;
        tabstops.forEach(function (ts, index) {
          var dest = this.$openTabstops[index] || ts;
          for (var i = 0; i < ts.length; i++) {
            var p = ts[i];
            var range = Range.fromPoints(p.start, p.end || p.start);
            movePoint(range.start, start);
            movePoint(range.end, start);
            range.original = p;
            range.tabstop = dest;
            ranges.push(range);
            if (dest != ts) dest.unshift(range);
            else dest[i] = range;
            if (p.fmtString || (dest.firstNonLinked && useLink)) {
              range.linked = true;
              dest.hasLinkedRanges = true;
            } else if (!dest.firstNonLinked) dest.firstNonLinked = range;
          }
          if (!dest.firstNonLinked) dest.hasLinkedRanges = false;
          if (dest === ts) {
            arg.push(dest);
            this.$openTabstops[index] = dest;
          }
          this.addTabstopMarkers(dest);
          dest.rangeList = dest.rangeList || new RangeList();
          dest.rangeList.$bias = 0;
          dest.rangeList.addList(dest);
        }, this);
        if (arg.length > 2) {
          if (this.tabstops.length) arg.push(arg.splice(2, 1)[0]);
          this.tabstops.splice.apply(this.tabstops, arg);
        }
      };
      this.addTabstopMarkers = function (ts) {
        var session = this.editor.session;
        ts.forEach(function (range) {
          if (!range.markerId) range.markerId = session.addMarker(range, 'ace_snippet-marker', 'text');
        });
      };
      this.removeTabstopMarkers = function (ts) {
        var session = this.editor.session;
        ts.forEach(function (range) {
          session.removeMarker(range.markerId);
          range.markerId = null;
        });
      };
      this.removeRange = function (range) {
        var i = range.tabstop.indexOf(range);
        if (i != -1) range.tabstop.splice(i, 1);
        i = this.ranges.indexOf(range);
        if (i != -1) this.ranges.splice(i, 1);
        i = range.tabstop.rangeList.ranges.indexOf(range);
        if (i != -1) range.tabstop.splice(i, 1);
        this.editor.session.removeMarker(range.markerId);
        if (!range.tabstop.length) {
          i = this.tabstops.indexOf(range.tabstop);
          if (i != -1) this.tabstops.splice(i, 1);
          if (!this.tabstops.length) this.detach();
        }
      };
      this.keyboardHandler = new HashHandler();
      this.keyboardHandler.bindKeys({
        Tab: function (editor) {
          if (exports.snippetManager && exports.snippetManager.expandWithTab(editor)) return;
          editor.tabstopManager.tabNext(1);
          editor.renderer.scrollCursorIntoView();
        },
        'Shift-Tab': function (editor) {
          editor.tabstopManager.tabNext(-1);
          editor.renderer.scrollCursorIntoView();
        },
        Esc: function (editor) {
          editor.tabstopManager.detach();
        },
      });
    }.call(TabstopManager.prototype));
    var movePoint = function (point, diff) {
      if (point.row == 0) point.column += diff.column;
      point.row += diff.row;
    };
    var moveRelative = function (point, start) {
      if (point.row == start.row) point.column -= start.column;
      point.row -= start.row;
    };
    dom.importCssString(
      '\n.ace_snippet-marker {\n    -moz-box-sizing: border-box;\n    box-sizing: border-box;\n    background: rgba(194, 193, 208, 0.09);\n    border: 1px dotted rgba(211, 208, 235, 0.62);\n    position: absolute;\n}',
      'snippets.css',
      false,
    );
    exports.snippetManager = new SnippetManager();
    var Editor = require('./editor').Editor;
    (function () {
      this.insertSnippet = function (content, options) {
        return exports.snippetManager.insertSnippet(this, content, options);
      };
      this.expandSnippet = function (options) {
        return exports.snippetManager.expandWithTab(this, options);
      };
    }.call(Editor.prototype));
  },
);

ace.define(
  'ace/ext/emmet',
  [
    'require',
    'exports',
    'module',
    'ace/keyboard/hash_handler',
    'ace/editor',
    'ace/snippets',
    'ace/range',
    'ace/config',
    'resources',
    'resources',
    'tabStops',
    'resources',
    'utils',
    'actions',
  ],
  function (require, exports, module) {
    'use strict';
    var HashHandler = require('../keyboard/hash_handler').HashHandler;
    var Editor = require('../editor').Editor;
    var snippetManager = require('../snippets').snippetManager;
    var Range = require('../range').Range;
    var config = require('../config');
    var emmet, emmetPath;
    function AceEmmetEditor() {}
    AceEmmetEditor.prototype = {
      setupContext: function (editor) {
        this.ace = editor;
        this.indentation = editor.session.getTabString();
        if (!emmet) emmet = window.emmet;
        var resources = emmet.resources || emmet.require('resources');
        resources.setVariable('indentation', this.indentation);
        this.$syntax = null;
        this.$syntax = this.getSyntax();
      },
      getSelectionRange: function () {
        var range = this.ace.getSelectionRange();
        var doc = this.ace.session.doc;
        return {
          start: doc.positionToIndex(range.start),
          end: doc.positionToIndex(range.end),
        };
      },
      createSelection: function (start, end) {
        var doc = this.ace.session.doc;
        this.ace.selection.setRange({
          start: doc.indexToPosition(start),
          end: doc.indexToPosition(end),
        });
      },
      getCurrentLineRange: function () {
        var ace = this.ace;
        var row = ace.getCursorPosition().row;
        var lineLength = ace.session.getLine(row).length;
        var index = ace.session.doc.positionToIndex({ row: row, column: 0 });
        return {
          start: index,
          end: index + lineLength,
        };
      },
      getCaretPos: function () {
        var pos = this.ace.getCursorPosition();
        return this.ace.session.doc.positionToIndex(pos);
      },
      setCaretPos: function (index) {
        var pos = this.ace.session.doc.indexToPosition(index);
        this.ace.selection.moveToPosition(pos);
      },
      getCurrentLine: function () {
        var row = this.ace.getCursorPosition().row;
        return this.ace.session.getLine(row);
      },
      replaceContent: function (value, start, end, noIndent) {
        if (end == null) end = start == null ? this.getContent().length : start;
        if (start == null) start = 0;
        var editor = this.ace;
        var doc = editor.session.doc;
        var range = Range.fromPoints(doc.indexToPosition(start), doc.indexToPosition(end));
        editor.session.remove(range);
        range.end = range.start;
        value = this.$updateTabstops(value);
        snippetManager.insertSnippet(editor, value);
      },
      getContent: function () {
        return this.ace.getValue();
      },
      getSyntax: function () {
        if (this.$syntax) return this.$syntax;
        var syntax = this.ace.session.$modeId.split('/').pop();
        if (syntax == 'html' || syntax == 'php') {
          var cursor = this.ace.getCursorPosition();
          var state = this.ace.session.getState(cursor.row);
          if (typeof state != 'string') state = state[0];
          if (state) {
            state = state.split('-');
            if (state.length > 1) syntax = state[0];
            else if (syntax == 'php') syntax = 'html';
          }
        }
        return syntax;
      },
      getProfileName: function () {
        var resources = emmet.resources || emmet.require('resources');
        switch (this.getSyntax()) {
          case 'css':
            return 'css';
          case 'xml':
          case 'xsl':
            return 'xml';
          case 'html':
            var profile = resources.getVariable('profile');
            if (!profile)
              profile =
                this.ace.session
                  .getLines(0, 2)
                  .join('')
                  .search(/<!DOCTYPE[^>]+XHTML/i) != -1
                  ? 'xhtml'
                  : 'html';
            return profile;
          default:
            var mode = this.ace.session.$mode;
            return (mode.emmetConfig && mode.emmetConfig.profile) || 'xhtml';
        }
      },
      prompt: function (title) {
        return prompt(title); // eslint-disable-line no-alert
      },
      getSelection: function () {
        return this.ace.session.getTextRange();
      },
      getFilePath: function () {
        return '';
      },
      $updateTabstops: function (value) {
        var base = 1000;
        var zeroBase = 0;
        var lastZero = null;
        var ts = emmet.tabStops || emmet.require('tabStops');
        var resources = emmet.resources || emmet.require('resources');
        var settings = resources.getVocabulary('user');
        var tabstopOptions = {
          tabstop: function (data) {
            var group = parseInt(data.group, 10);
            var isZero = group === 0;
            if (isZero) group = ++zeroBase;
            else group += base;
            var placeholder = data.placeholder;
            if (placeholder) {
              placeholder = ts.processText(placeholder, tabstopOptions);
            }
            var result = '${' + group + (placeholder ? ':' + placeholder : '') + '}';
            if (isZero) {
              lastZero = [data.start, result];
            }
            return result;
          },
          escape: function (ch) {
            if (ch == '$') return '\\$';
            if (ch == '\\') return '\\\\';
            return ch;
          },
        };
        value = ts.processText(value, tabstopOptions);
        if (settings.variables['insert_final_tabstop'] && !/\$\{0\}$/.test(value)) {
          value += '${0}';
        } else if (lastZero) {
          var common = emmet.utils ? emmet.utils.common : emmet.require('utils');
          value = common.replaceSubstring(value, '${0}', lastZero[0], lastZero[1]);
        }
        return value;
      },
    };
    var keymap = {
      expand_abbreviation: { mac: 'ctrl+alt+e', win: 'alt+e' },
      match_pair_outward: { mac: 'ctrl+d', win: 'ctrl+,' },
      match_pair_inward: { mac: 'ctrl+j', win: 'ctrl+shift+0' },
      matching_pair: { mac: 'ctrl+alt+j', win: 'alt+j' },
      next_edit_point: 'alt+right',
      prev_edit_point: 'alt+left',
      toggle_comment: { mac: 'command+/', win: 'ctrl+/' },
      split_join_tag: { mac: "shift+command+'", win: 'shift+ctrl+`' },
      remove_tag: { mac: "command+'", win: 'shift+ctrl+;' },
      evaluate_math_expression: { mac: 'shift+command+y', win: 'shift+ctrl+y' },
      increment_number_by_1: 'ctrl+up',
      decrement_number_by_1: 'ctrl+down',
      increment_number_by_01: 'alt+up',
      decrement_number_by_01: 'alt+down',
      increment_number_by_10: { mac: 'alt+command+up', win: 'shift+alt+up' },
      decrement_number_by_10: { mac: 'alt+command+down', win: 'shift+alt+down' },
      select_next_item: { mac: 'shift+command+.', win: 'shift+ctrl+.' },
      select_previous_item: { mac: 'shift+command+,', win: 'shift+ctrl+,' },
      reflect_css_value: { mac: 'shift+command+r', win: 'shift+ctrl+r' },
      encode_decode_data_url: { mac: 'shift+ctrl+d', win: "ctrl+'" },
      expand_abbreviation_with_tab: 'Tab',
      wrap_with_abbreviation: { mac: 'shift+ctrl+a', win: 'shift+ctrl+a' },
    };
    var editorProxy = new AceEmmetEditor();
    exports.commands = new HashHandler();
    exports.runEmmetCommand = function runEmmetCommand(editor) {
      if (this.action == 'expand_abbreviation_with_tab') {
        if (!editor.selection.isEmpty()) return false;
        var pos = editor.selection.lead;
        var token = editor.session.getTokenAt(pos.row, pos.column);
        if (token && /\btag\b/.test(token.type)) return false;
      }
      try {
        editorProxy.setupContext(editor);
        var actions = emmet.actions || emmet.require('actions');
        if (this.action == 'wrap_with_abbreviation') {
          return setTimeout(function () {
            actions.run('wrap_with_abbreviation', editorProxy);
          }, 0);
        }
        var result = actions.run(this.action, editorProxy);
      } catch (e) {
        if (!emmet) {
          var loading = exports.load(runEmmetCommand.bind(this, editor));
          if (this.action == 'expand_abbreviation_with_tab') return false;
          return loading;
        }
        editor._signal('changeStatus', typeof e == 'string' ? e : e.message);
        config.warn(e);
        result = false;
      }
      return result;
    };
    for (var command in keymap) {
      exports.commands.addCommand({
        name: 'emmet:' + command,
        action: command,
        bindKey: keymap[command],
        exec: exports.runEmmetCommand,
        multiSelectAction: 'forEach',
      });
    }
    exports.updateCommands = function (editor, enabled) {
      if (enabled) {
        editor.keyBinding.addKeyboardHandler(exports.commands);
      } else {
        editor.keyBinding.removeKeyboardHandler(exports.commands);
      }
    };
    exports.isSupportedMode = function (mode) {
      if (!mode) return false;
      if (mode.emmetConfig) return true;
      var id = mode.$id || mode;
      return /css|less|scss|sass|stylus|html|php|twig|ejs|handlebars/.test(id);
    };
    exports.isAvailable = function (editor, command) {
      if (/(evaluate_math_expression|expand_abbreviation)$/.test(command)) return true;
      var mode = editor.session.$mode;
      var isSupported = exports.isSupportedMode(mode);
      if (isSupported && mode.$modes) {
        try {
          editorProxy.setupContext(editor);
          if (/js|php/.test(editorProxy.getSyntax())) isSupported = false;
        } catch (e) {}
      }
      return isSupported;
    };
    var onChangeMode = function (e, target) {
      var editor = target;
      if (!editor) return;
      var enabled = exports.isSupportedMode(editor.session.$mode);
      if (e.enableEmmet === false) enabled = false;
      if (enabled) exports.load();
      exports.updateCommands(editor, enabled);
    };
    exports.load = function (cb) {
      if (typeof emmetPath !== 'string') {
        config.warn('script for emmet-core is not loaded');
        return false;
      }
      config.loadModule(emmetPath, function () {
        emmetPath = null;
        cb && cb();
      });
      return true;
    };
    exports.AceEmmetEditor = AceEmmetEditor;
    config.defineOptions(Editor.prototype, 'editor', {
      enableEmmet: {
        set: function (val) {
          this[val ? 'on' : 'removeListener']('changeMode', onChangeMode);
          onChangeMode({ enableEmmet: !!val }, this);
        },
        value: true,
      },
    });
    exports.setCore = function (e) {
      if (typeof e == 'string') emmetPath = e;
      else emmet = e;
    };
  },
);
(function () {
  ace.require(['ace/ext/emmet'], function (m) {
    if (typeof module == 'object' && typeof exports == 'object' && module) {
      module.exports = m;
    }
  });
})();
